Sliding-door lock.



E. W. TEST & N. A. LEIST.

SLIDING DOOR LOCK.

APPLICAUON FILED JAN. 12, 1915.

Patented Nov; 23, 1915.

2 SHEETS-LSHEET 1.

E. W. TEST & N. A. LEIST,

SLIDPNG DOOR LOCK.

APPLICATION FILED JAN. 12, I915.

Patented Nov. 23, 1915.

2 SHEETS-SHEET 2- lmvenfawfi:

W! the; sea:

ELLIS W. TEST AND NORMAN A. LEIST, OF MICHIGAN CITY, INDIANA.

SLIDING-DOOR LQCK.

Specification of Letters Patent.

Patented'Nov. 23, 1915.

Applicationfiled January 12, 1915, Serial No. 1,757.

have invented certain new and useful Im-,

provements in Sliding-Door Locks, of which the following is aspecification, and which are illustrated in the accompanying drawings,forming a part thereof.

The invention relates to locking devices for securing sliding doors, andwhile adapted to doors mounted on any structure is intended primarilyfor use in connection with car doors.

Th objects of the invention are to provide a locking device by means ofwhich the closing of the door may be completed and its initial movementin opening secured, the door being wedged inwardly against the casing asit is closed; to provide improved means for securing the locking partsagainst movement, and for the application ofa padlock. These objects areattained in the device hereinafter described, and illustrated in theaccompanying drawings, in which Figure 1 is a detail elevation of theside of a car with the locking mechanism applied thereto and shown inpart in section; Fig. 2 is a detail of a rack bar and gear comprisingparts of the locking mechanism; Fig. 3 is a detail of the lockingmechanism showing a modified form of construction; Fig. 4. is asectional detail of the structure shown in Fig. 3; Fig. 5 is a detailelevation of the casing of the locking device; Fig. 6 is a detail plansection of the same; Fig. 7 is a sectional detail of the gear and retaining pawl of the locking mechanism; and Fig. 8 is a detail of the lockingmechanism showing a further modification.

At 10 there is shown the door post of a car, and at 11 a portion of thecar door.

The lockingmechanism consists of a rack bar 12, which is attached to thedoor pref-- erably by means of a pivot 13, set through a strap 14attached to the doorbysuitable bolts or rivets. The rack bar 12 normallyprojects beyond the forward edge of the door, but may be turned upwardlyon the pivot 13 when the door is open. A socketed casing 15 is securedto the door post by means of suitable bolts or rivets, and receivesthe-end of the rack bar 12 as the door closes. A gear wheel 1 ispivotally umted within the casing 15, and cooperates with the rack bar.A handle 17, attacliecl preferably permanentlyto the arbor 18 of thegear, provides means for turning the latter to draw the rack barinto thecasing and thus complete the closing of the door, or to force the rackbar out of the casing, thus partially opening the door. 1 i T In theform of construction illustrated in Figs. 1, 2, 3, 4 and 7, a retainingpawl 19 is,

pivotally mounted within the casing 15-and cooperates with the gear 16,the latter being provided with one or more ratchet teeth, as

shown at 20 in Fig. 2, for its engagement. A lateral lug 21 on the pawlprojects through a slot 22 in the outer face of the casing'15', anda'fiords ineans for the manual control of the pawl. As shown' in Fig. 1,a pair of lugs 23, 24, formed on the outer face of the casing 15, flankthe slot 22, and are apertured for the reception of a seal strap,the

' lug 21 being similarly apertured and the severa-l lugs being sodisposed that their apertures are in register when the pawl is inengagement with the gear.

As shown in Figs. 3 and 4, a hook 25 may be pivoted upon the outer faceof the casing 15 in such position that its nose will enter the aperturein the lug 21 of the pawl. When such hook is employedthe lugs. 23,

'24:, may be present, as indicated in Fig. 3,

or may be omitted, as indicated in Fig. 4. When such hook is employedits nose is transversely apertured, as shown at 26, for the reception ofa seal strap.

In the construction illustrated in Fig. 8, the retaining pawl isdispensed with, the handle 17 being provided with a forwardly projectingapertured toe 27, and a hook 28 being mounted on the outer face of thecasing for engagement therewith when the door is closed. When this formof construction is used, the seal may be applied in various ways. Forthis purpose there is shown a pair of upstanding apertured lugs 29, 30,one formed on the hub of the hook 28 and the other on the casing 15.When the hookis in engagement with the toe 27, the apertures intheselugs are in register and the strap may be passed therethrough. I

The casing 15 is provided with a for wardly projecting guide lug 81,having a beveled face and adapted to engage the outer surface of thedoor as the latter is closed'andforce it inwardly snugly against sealthe door casing, this lug taking the place of the guide lug which hasheretofore been placed at the bottom of the door.

The rack bar 12 is provided near its inner end With a dependingapertured lug and the casing 15 is protided with an apertured flange 33in line with the lug. When the door is closed the lug 32 and flange 33come together face to face, their apertures registering to accommodatethe hasp of a padlock.

While the device is shown and described as applied to a car having-asingle door, it is obviously applicable as well to double door cars suchas are used in the shipment of automobiles. \Vhen. so applied the frameof one of the doors will take the place of the door frame post and carrythe socketed cas ing 15.

e claim as our invention 1. In a sliding door securing device, incombination, a rack bar adapted for pivotal attachment to a door, asocketed keeper for Y attachment to a door casing to receive the rackbar, a gear Within the keeper for engaging the bar, and a handle forturning the ear. b 2. In a sliding door securing device, in combination,a bracket for attachment to a fdoor, a rack bar pivotally attached tothe bracket and capable of swinging upward, a soeket d keeper forattachment to a door casing to receive the bar, the throat of the sockethaving an inclined face for deflecting the bar upward, a gear within thekeeper and engageable with the bar, and a handle for turning the gear.

3. In a sliding door securing device, in combination, a rack bar adaptedfor pivotal attachment to a door and having a vertical aperture at itsfree end, a sockcted keeper for attachment to a door casing to receivethe rack bar, a gear within the keeper for engaging the bar. a handlefor turning the gear, and a bolt for engagingthe bar and aperture, suchbolt haringva longitudinal slot, and a holding stud loosely engaging theslot for securing the bolt to the door casing. 4. In a fastening devicefor cooperating i with a sliding door and its @asing. the 'combinationwith a rack bar adapted for pivotal attachment to one of such parts, anda socketed keeper adapted for attachment to the other of such parts andto receive the rack bar.a gear within the keeper for engaging therackbar, and a handle for turning the gear.

ELLIS IV. TEST. NORMAN A. LEIST.

\Vitnesses:

R. E. FRAME, R. M. Fox.

